ch 28 REPRODUCTION

STUDY

PLAY

The organ that monitors and adjusts the composition of tubular fluid, recycles damaged spermatozoa, and is the site of sperm maturation is the seminal gland (seminal vesicle). prostate gland. epididymis. rete testis. ductus deferens.

c

The organ that carries sperm from the epididymis to the urethra is the epididymis. seminal gland (seminal vesicle). ductus deferens. corpus cavernosum. ejaculatory duct

c

Which of the following muscles move the testes toward the body? the dartos the tunica muscularis the cremaster the biceps brachii both the cremaster and the dartos muscles

e

The spermatic cord isANSWER: a layer of smooth muscle in the skin of the scrotal sac. a dense layer of connective tissue that surrounds the testis. a narrow opening that links the scrotal chamber with the peritoneal cavity. the external marking of the boundary between the two chambers of the scrotum. a bundle of tissue that contains the ductus deferens, blood vessels, nerves, and lymphatics that serve the testis.

The role of FSH in males is toANSWER: stimulate the nurse cells to produce inhibin. initiate sperm production in the testes. develop and maintain secondary sex characteristics. influence sexual behaviors and sex drive. stimulate the interstitial cells to produce testosterone.

Contraction of the cremaster musclesANSWER: pulls the testes closer to the body cavity. propels sperm through the urethra. tenses the scrotal sac. tenses the scrotal sac and pulls the testes closer to the body cavity. moves sperm through the ductus deferens.

d

Contraction of the dartos muscleANSWER: propels sperm through the urethra. produces an erection. moves sperm through the ductus deferens. initiates seminal emission. tightens the scrotal sac.

e

he middle piece of the sperm contains the ________ in a spiral arrangement.

mitochondria

the ________ is the part of the sperm that contains the DNA.

head

Primary spermatocytes are produced by mitosis of cells called ________.

spermatagonia

The hormone that stimulates spermatogenesis in males is ________.

FSH

The interstitial cells in the testes produce _______

testosterone

The broad ligament isANSWER: a structure that anchors the ovary to the rectouterine pouch. an extensive mesentery that encloses the ovaries, uterine tubes, and uterus. a structure that extends from the lateral surface of the ovary to the pelvic wall. a pocket formed between the posterior wall of the uterus and the anterior surface of the rectum. a thickened fold of mesentery that supports and stabilizes the position of the ovary.

b

The organ that transports the ovum to the uterus is theANSWER: vagina. uterosacral ligament. myometrium. infundibulum. uterine tube.

e

The round ligaments extend from theANSWER: base of the uterus and vagina to the lateral walls of the pelvis. cervix of the uterus to the vagina. lateral margins of the uterus, through the inguinal canal to the external genitalia. lateral surface of the uterus to the anterior surface of the sacrum. body of the uterus to the fundus.

The surge in luteinizing hormone that occurs during the middle of the ovarian cycle triggersANSWER: menopause. follicle maturation. menstruation. ovulation. atresia.

d

A rise in the blood levels of follicle-stimulating hormone at the beginning of the ovarian cycle is responsible forANSWER: ovulation. menstruation. follicle maturation. atresia. menopause.

c

During the proliferative phase of the menstrual cycle,ANSWER: the endometrium finalizes the preparation for implantation. the functional zone of the endometrium is restored. the fertilized ovum implants. the old functional layer is sloughed off. the corpus luteum is forming.

b

During the secretory phase of the menstrual cycleANSWER: progesterone levels are high. the corpus luteum is formed. the fertilized ovum implants. endometrial glands enlarge. All of the answers are correct.

Correct

e

The uterine phase that develops because of a fall in progesterone levels isANSWER: the proliferative phase. the follicular phase. the menses. the secretory phase. the luteal phase.